James polk williams



(N6 Medel.) sheets-sheet 1,.

J. P. WILLIAMS.. GIRGULAR'SAW MILL.

166.466.666. Peteeted Peb. 16, 1692.

Xw/ N (No Model.) 3 sheets-sheet 2; l

' J. P. WILLIAMS.

CIRCULAR SAW MILL.

No. 468.856,. Patented Feb. 16, 1.892.

(No Model.) sheets-sheet 3.

J. P. WILLIAMS. Y

CIRCULAR SAW MILL.

No. 468,856., PatentedvF-eb. 16, 1892.-

UNITED STATES PATENT FFICE.

JAMES POLK VILLIAMS, OF INDEPENDENCE, KENTUCKY, ASSIGNOR OF ONE-HALF TOR. F. VILLIAMS, OF SAME PLACE.

CIRCULAR-SAW MILL.

SPECIFICATION forming part of Letters Patent No. 468,856, dated February16, 1892. Application tiled October 19, 1889. Serial No. 327,602.` (Nomodel.)

To @ZZ whom it may concern:

VBe it known that I, JAMEs POLK WILLIAMS, a citizen of the UnitedStates, residing at Independence, in the countyI of Kenton and State ofKentucky, have invented a new and useful Improved Circular-Saw Mill,reference being had to the accompanying drawings.

This invention relates to certain new and useful improvements' incircular-saw mills; and it has for its object to improve upon theconstruction and render more efficient in operation that class ofcircular-saw mills in which a continuous cutting motion is imparted tothe saw during both the'forward and return movements of the carriage andinwhich by a peculiar arrangement of levers and mechanism to which theyare connected the saw may be raised or lowered, so as to adapt it to cutfrom the top ofthe log downward or from the under side upward, as may bedesired, thus rendering it possible to cut logs of greater diameter bythe use of la single saw of small or medium size and dispensing with theuse of a top or additional saw.

To the above ends and to such others as the invention may pertain thesame consists in the peculiar construction and in the novel combination,arrangement, and adaptation of parts, all as more fully hereinafterdescribed, shown in the accompanying drawings, and then specificallydefined in the appended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, formapart of thisspecification, like letters of reference indicating like partsthroughout the several views, and in which- Figurel is aperspectiveview-of a saw-mill constructed in accordance with myinvention. Fig.2isabotto1n plan view of the same. Fig. 3 is a transverse horizontalsection.

Reference now being had to the details of the drawings by letter, Adesignates the lower portion of the frame of the machine.

B B are uprightls, which are preferably made of heavy planking boltedsecurely at their ylower ends to the base portion of the frame, and thusserve as supports for the platform.

C is the saw-arbor, carrying at one of its ends the saw' C and upon itsopposite end is provided with a pulley C2.

D and D are screw-threaded shafts, which rise vertically from the baseportion of the machine vand are extended through openings formed in theplatform B adjacent to and to the rear of the saw-arbor. The shaft D isjournaled at its lower end within suitable journal-boxes D2, which isbolted securely to the outer face of the side timber of the base of theframe, while at its upper end it is pro-` vided with a gear-wheel D3.The shaft D is" passed through journal-boxes D4 and D5 and at its lowerend extends a short distance below the lower edge of the frame of themachine. Itis provided with a screw-threaded drum DG. provided with agear-Wheel D7, which is in all respects similar to the gear-Wheel D3upon the shaft D.

E is a shaft entending transversely through the base portion of theframe of the machine a short distance to the rear of the saw-arbor. Thisshaft is provided at its outer end with a pulley E.

E2 and E3 are friction-wheels, which are keyed to the body of the shaftEat points adjacent to and equidistant from the longitudinal center ofthe machine.

F is a vertical shaft carrying upon its lower end a horizontalfriction-Wheel E, adapted to be rotated by being brought into contactwith either of the wheels E2 or E3, as will presently appear. The shaftF is provided with suitable bearings and is provided at its upper endwith a pinion F3, which pinion is adapted to mesh with the pinion F4upon the lower end of the vertical shaft E5, the upper end of whichshaft extends through an aperture formed in the' platform B and isprovided with a gear- Wheel F6, which meshes with the gear-Wheel D3 andalso D7, as is best shown in Fig. l of the drawings.

G is a transverse shaft carrying upon one The upper end of said shaft Dis of its ends 'a gear-Wheel G and upon its opposite end a similargear-wheel G2, which gearwheel G2 is adapted to mesh with the wormgearupon the .drum D6. 1

H is a rack-bar, which is adapted to move within suitable guides H',secured to the basetimber of the fraine. The cogs` upon the lower edgeof the rack-bar are adapted t0 mesh with the cogs upon the gear-Wheel G.

H2 is a tightener-pulley, which is sleeved upon a stub-shaft carried bythe upright H2", attached to the rack-barI-I.

I is a transverse shaft, which is journaled within the front end of thebase .portion of the machine. The shaft I is provided with a gear-wheelIand upon its eXtreme outer end is provided a pinion I2.

J is a transverse shaft journaled within the lower portion of the frameand carrying upon one of its ends a pinion J.

K is a horizontal shaft, which is j ouriialed within the lower portionof the frame of the machine and extends longitudinally through thecenter of the base portion of the machine from a point adjacent to theshaft J to a'point between the friction-wheels E and E2 upon the shaft Eand is provided at its front end with the disk K and at its rear endwith the friction-wheel K2, which is adapted to be rotated by contactwith the friction-wheel E2.

K3 is a spiral spring, which is sleeved upon the body of the shaft K,one end of said spring bearing against the journal-box K4 and its\opposite end bearing against the collar. K5

upon the shaft, thus insuring a constant pressure of the disk K againstthe friction-wheel J3 upon the shaft J.

L is an operating-lever, which is attached at its lower end to the shaftL', which shaft is provided with suitable bearings upon the outer faceof the side timber of the base portion of the fraine upon the sideadjacent to the saw-carriage and extends to the rear end of the frame,where it connects by means of the crank L2 and link L2 with the free endof the lever M, the opposite end of which lever is connected with thevertical shaft F, carrying at its lower end the frictioii-wheel F.

N is the lever which is used to control the movement of thesaw-carriage. This lever is sleeved at its lower end upon the outer endof the arm or stub-shaft N, and within the enlarged central portion N2of the leveris received the shaft J and friction-wheel J 2, carried bysaid shaft, the said enlarged portion N2 of the lever being providedwith Vertical slots, as shown in Fig. l of the drawings, for theaccommodation of the shaft and wheel.

The operationof the mechanism is as follows: Suppose-that thesaw-carriage has been moved and the log carried thereby has been cutfrom the under side upward by the upper portion of the saw and that itis now proposed to raise the saw, so as to cause the same to cutdownward from tli'e top of the log. By pressing the lever L to therightit will be seen that the shaft L will be given a partial revolution, andmotion will thus be imparted through the crank L2 and connecting-link L3to the lever M, and the frictionwheel F will thus be forced into contactwith the inner face of the wheel`E2 upon the shaft E, upon the outer endof Vwhich shaft is carried the pulley E'. This contact of thefrictioii-wheel F with the revolving wheel E2i n1 parts motion to thevertical shaft, upon which the wheel E3 is secured, and through thepinion F3 upon its upper end motion is imparted to the pinion F4 andshaft F5, causing the gear-wheel F6 upon its upper end to rotate thevertical screw-threaded shaftsl) and D bythe engagement with thegear-wheels l)s and D7 with the wheel F6, thus raising the saw-arbor, aswill be readily understood. It will also be seen that by reversing themotion of the operating-lever L the frictionwheel F will be brought intoContact with the wheel lE2 and the several shafts will be caused torotate in an opposite direction, thus lowering the saw-arbor.

The movements of the saw-carriage are regulated by the manipulation ofthe lever N either to the right or left, which movement of the levermoves the wheel J 3 to the right or left, as the case may be, upon theshaft J, the said wheel J 3 being adapted to rotate with the shaft andyet is movable thereon in the direction of the length of the shaft. Thismovement of the wheel J 3 causes the same to bear upon the face of therevolving-disk K at such point as may be desired, (depending, of course,upon the distance the lever is moved,) and the shaft J may be thuscaused to rotate slowly or rapidly, as desired, the rate of speeddepending upon'the point upon the wheel at which contact is had with thedisk, and the directionof rotation of said shaft will depend upon thepoint of contact, as if the wheel contacts with the disk at a point tothe right of the center of the disk the shaft willbe caused to rotate tothe right and if the contact be to the left of the center the rotationwill be to the left. Motion is imparted through the mediumof thegear-Wheel J to the gear-Wheel I', and thence by any suitable chain ofgearing to the saw-carriage. As the saw is raised or lowered, the wheelG', meshing with the rack I-l, moves the latter to tighten or loosen thepressure of the wheel H2 on the belt, tlie said wheel H2 serving as abelt-tightenei.

IIaving thus described my inventiomwhat I claim to be new, and desire tosecure by Letters Patent, is-

l. The combination, with the devices foi' carrying the saw, of twooppositely-.disposed screw-threaded shafts, gear-wheels upon saidshafts, connections between the saw and gears and screw-threaded shafts,La gear-Wheel arranged between and meshing with said gear- Wheels, and alever and connection, substan- IOO IIO

tially as described,for changing the direction pulley C2, and the beltpassed over said pul- Io of rotation of th'e central gear-Wheel and theleys, substantially as shown, and f01 the purrack-bar and (3o-operatingbelt-tightener, as pose specified.

set forth. W'itnessmy hand this 3d day of September,

2. The combination, with the rack-bar and 1889.

its guides, of the gear-Wheel, the saw-carriage, JAMES POLK WILLIAMS.

the transverse shaft E, its pulley E', the tight- Witnesses:

ener-pulley H2, carried by the raek-bar, the J. G. STRATTON,

pulley C2, means for vertieally adjusting said J EFF. BRADFORD.

